theorem proved term proof

`sigma_one_eighthundredforty`

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formal statement (Lean)

1206theorem sigma_one_eighthundredforty : sigma 1 840 = 2880 := by native_decide

Term-mode proof.

1207
1208/-- σ_0(840) = 32. -/

Lean names referenced from this declaration's body.

sigma in IndisputableMonolith.Decision.AbileneParadox decl_use
sigma in IndisputableMonolith.NumberTheory.Primes.ArithmeticFunctions decl_use